Evaluation of Induced Voltages Caused by Power Lines on Pipelines Located in The Common Corridor

Sharing of common corridors by gas pipelines and overhead power lines is becoming quite common. Voltages can be induced in gas pipelines due to power lines in areas where they share the corridor. These voltages can affect the operating personnel, pipeline associated equipment and pipeline cathodic protection systems. As a consequence, integrity and safety of the pipeline may be jeopardized, leading to high maintenance and repair costs to the pipeline owners. There is an industry wide need to increase the understanding of the process of interaction between power lines and nearby pipelines and the mitigation of resulting effects. For this purpose, the performance and capabilities of PRC [1] and CDEGS [2] software will be examined. The PRC International is a software package that has been developed for interference studies in relation to pipelines and power lines and CDEGS is a well regarded software package used for the analysis of electrical induction and conduction problems occurring in non-uniform three-dimensional lossy environments (eg. air and soil) when time-harmonic currents are injected into various points of the network of arbitrarily located conductors in that environment [2,3].

Keywords:

component , Power lines , Pipelines , Induced Voltage , Transmission lines